Zobrazeno 1 - 10
of 33
pro vyhledávání: '"B. Hallouche"'
Publikováno v:
International Journal of Advanced Remote Sensing and GIS. 4:1271-1285
In the present study, Sinos River basin sediments of south Brazil were characterized using reflectance spectroscopy in 350-2500 nm range. This basin is located in an industrialized and densely populated area. The results focus on the influence of alu
Autor:
Flávio F. Ivashita, Reginaldo Barco, Lilian Felipe da Silva Tupan, Andrea Paesano, B. Hallouche
Publikováno v:
Hyperfine Interactions. 238
LaV1−xFexO3 perovskites were synthesized in the vanadium-rich concentration range (i.e., x < 0.5) and characterized structurally and for the hyperfine properties of the iron nuclear probe. The aim of this investigation was to better understand the
Autor:
F. F. Ivashita, J. V. Bellini, E. C. Reisdoerfer, A. C. S. da Costa, B. Hallouche, A. Paesano, S. A. Pianaro
Publikováno v:
Hyperfine Interactions. 195:235-240
The system (1 − X).ZnO+X.FeO was high-energy ball-milled for 24 h and characterized by X-ray diffraction and Mossbauer spectroscopy. Sintered pellets were also prepared for X ≤ 0.07 by further thermal annealing pressed milled samples. These sampl
Autor:
B. Hallouche, Luis Ghivelder, Suzana Nóbrega de Medeiros, João Batista Marimon da Cunha, Andrea Paesano, Valdecir Biondo
Publikováno v:
Solid State Sciences. 11:1444-1450
The Fex(Cr2O3)1−x system, with 0.10 ≤ X ≤ 0.80, was mechanically processed for 24 h in a high-energy ball-mill. In order to examine the possible formation of iron–chromium oxides and alloys, the milled samples were, later, thermally annealed
Publikováno v:
Applied Surface Science. 254:347-350
Fe x Ni 100− x thin films were produced by galvanostatic electrodeposition on Si (1 0 0), nominal thickness 2800 nm, and x ranging 7–20. The crystalline structure of the sample was determined by X-ray diffraction (XRD). The magnetic properties we
Publikováno v:
Journal of Magnetism and Magnetic Materials. 316:29-33
Barium hexaferrite powders with manganese substitution were prepared by mechanosynthesis. The structural and magnetic properties were characterized by X-ray diffractometer and vibration sample magnetometer, respectively. XRD patterns were refined by
Publikováno v:
Hyperfine Interactions. 175:55-61
In the present study, iron-containing pyrochlores of the A2FeBO7 type (where A = Y, Gd, Eu and Dy; B = Sb and Nb) were synthesized by solid-state reaction of precursor oxides. The compounds were structurally and magnetically characterized by X-ray di
Publikováno v:
Hyperfine Interactions. 175:77-84
In the present study, BaFe12−X Mn X O19 hexaferrites were prepared by high-energy ball milling and subsequent thermal annealing. The structural and magnetic characterizations were carried out by X-ray diffraction, Mossbauer spectroscopy and magneti
Autor:
B. Hallouche, J.B.M. da Cunha, Luiz Fernando Cótica, S. C. Zanatta, S.N. de Medeiros, Andrea Paesano
Publikováno v:
Journal of the American Ceramic Society. 88:3316-3321
We investigated the mechanosynthesis of gadolinium iron garnet by high-energy ball milling stoichiometry amounts of α-Fe2O3 and Gd2O3, followed by short thermal annealings conducted at moderate temperatures. X-ray diffraction and Mossbauer spectrosc
Autor:
L. F. Cótica, S.N. de Medeiros, Célia Kimie Matsuda, J.B.M. da Cunha, B. Hallouche, S. L. Silva, Andrea Paesano
Publikováno v:
Journal of Applied Physics. 96:2540-2546
Metal-oxide composites were synthesized by high-energy ball milling of metallic iron (α-Fe) and alumina (α-Al2O3) powders, varying the starting relative concentration and the milling time. The samples were characterized by scanning electron microsc